Bobbin fob



UNITED sTATEs PATENT oEEroE.

ISAAC HAYDEN, OF LAVVRIGNCE, MASSACHUSETTS.

BOBBIN FOR ROVING- AND SLUBBINGr.

Specicaton of Letters Patent No. 17 ,929, dated August 4, 1857.

To all wko/m, it may concern:

Be it known' that I, IsAAo HAYDEN, of Lawrence, in the county of Essexand State of Massachusetts, have invented certain new and usefulImprovements in Bobbins for Roving and Slubbing Frames; and I do herebydeclare that the same are described and represented in the followingspecification and drawings.

To enable others skilled in the art to make and use my improvements Iwill proceed to describe their constructionv and use, referring to thedrawings in which the same letters indicate like parts in each of thegures.

Figure 1 is an elevation of a bobbin with my improvements. Fig, 2 is asection through the center of Fig. 1.

The nature of my invention and improvement in bobbins for roving andslubbing frames consists in making that portion of the barrel of thebobbin which receives and takes up the second layer of roving largerthan that portion of the barrel which receives and takes up the firstlayer of roving, to compensate for the thickness of said first layer andthereby maintain a uniform draft or strain on the roving between thedelivering rollers and the bobbin.

In the accompanying drawings A is a bobbin with my improvements adaptedto roving and slubbing frames which have a differential traverse motion,for filling the bobbin with roving or slubbing, and diminishing thelength of each successive layer of roving after the second, so as togive the ends of the whole series of layers of roving a conical form ateach end, to prevent the outer layers from slipping 0E over thosebeneath them and getting tangled or injured in handling.

The form of the roving on the bobbin A, is represented by dotted linesin Fig. 1. The machine which makes the roving begins to wind it upon thebobbin at B, and continues down to C, and then up to D, and from thencedown and up alternately, making each successive layer shorter than theprevious one, until the proper quantity of roving is collected on thebobbin, and the last or outer layer is wound up to the point or angle E,in the dotted lines representing the roving, when the machine isstopped, and the attendant raises the bobbin from the pin (whichprojects into one of the scores F, F, in the end of the bobbin to turnit) and turns the bobbin back to unwind one or more coils of roving andseparates it from that on the bobbin, which is now removed from thespindle, andits place supplied by an empty bobbin, to which the end ofthe roving separated from the full one removed is applied and woundaround the bobbin on the small part G, close to its junction with thelarge part H, when the machine after having its several parts properlyadjusted is set in motion and the roving is wound down to C, coveringthe small part Gr with the first layer. Then the traverse is reversedand thel second layer is wound up, covering the first layer and thelarge part H, of the bobbin, which large part should be made as muchlarger in diameter than the small part as twice the thickness of thefirst layer of roving, so that the draft or strain on the roving will bethe same or uniform in winding the second layer when it passes from oroff of the first layer onto the large part H, of the bobbin, so as toprevent the'roving from running slack so as to kink and become tangledand break when the winding of the second layer passes off of the firstonto the bobbin, as it would do if the bobbin was made of a uniform sizefrom end to end, as they always had been made prior to the date of myinvention.

Manufacturers have always experienced a great deal of difficulty andinconvenience in using bobbins of a uniform size from end to end, with adifferential traverse motion for shortening the layers of rovingsuccessively and making the ends conical, as the roving and stubbingmachines have been made so as to begin the first layer of roving on thebobbin at a greater or less distance from one end in proportion as theends of the layers of roving are formed more or less conical. In most ofthe machines for making twisted roving or slubbing the relative speed ofthe delivering rollers, bobbins or fliers is changed at the beginning ofeach new layer to compensate for the increase in size or diameter of theroving wound on the bobbin occasioned by the last layer of roving, so asto wind each layer with the same strain, draft or uniform tension. Nowas the roving is begun to be wound upon the bobbin at some distance fromone end and wound to the other end when the relative speed Vof some ofthe parts is changed to compensate for the increased size upon which thesecond layer is wound upon the first; when the second layer has coveredthe rst and passes onto the empty space Whichilacks the increaseddiameter of the thickness of the first layer the draft on the roving asit leaves the delivering rollers is reduced, so that the roving runs soslack that it kinks, becomes tangled and broken and the machine has tobe stopped to piece it up or mend -the break, so that it is with greatdificulty the machine is made to Wind the second layer on the emptyspace on the bobbin not covered by the first layer, so that much Wasteand tangled roving is made, the machine is delayed, and less Work gotoff, besides the loss of time and labor of the attendant, increasing thecost of producing the Work, rendering the roving inferior Where thejoinings are made, rendering it more diiiicult to spin, and producingyarn of an inferior quality. By making that portion of the bobbin largerwhich is not covered by the first layer of roving according to myinvention and improvement the difiiculty heretofore experienced andcomplained of is completely overcome and obviated andthe evils resultingtherefrom avoided, so as to make perfect roving or slubbing, enable themachine to make a greater quantity in a given time, at less cost oflabor and material which will produce more perfect yarn When spun. Y

I believe I have described and represented my invention or improvementin bobbins for roving and slubbing so as to enable any person skilled inthe art to make and use them. I will now state what I desire to secureby Let-ters Pat-ent, to Wit:

I claim- Making that portion of the barrel of the bobbin which receivesand takes up the second layer of roving, larger than that part of thebarrel Which receives and takes up the irst layer, substantially asdescribed, to compensate for the thickness of the said first layer andmake the draft on the roving or slubbing uniform.

- ISAAC HAYDEN. Witnesses: u

N. G. VHITE, ROBERT Cross.

